Means for attaching gun-sights to firearms.



G. HAMMOND. MEANS FOR ATTACHING GUN SIGHTS T0 FIREARMS.

APPLICATION FILED SEPT. 30. 1915.

Patented Feb. 18, 1919.

TOR NE Y.

WITNESSES:

m: "can: "nus m, mumuma. ullsulnmcn. n. c. A

TTD STATES PATENT FTCE.

GRANT HAMMOND, 0F HARTFORD, CONNECTICUT, ASSIGNOR TO DALTON ARMS CORPO- RATION, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

MEANS FOR ATTACHIN G GUN -SIGHTS TO FIREARMS.

Specification of Letters Patent. Patented Feb. 18, 1919.

Application filed September 30, 1915. Serial No. 53,222.

T 0 all whom it may concern:

Be it known that I, GRANT HAMMOND, a citizen of the United States, and a resident of Hartford, in the county of Hartford and State of Connecticut, have invented a new and Improved Means for Attaching Gun- Sights to Firearms, of which the following is a specification.

My invention relates to the means for attaching sights to guns, and more especially to that class of guns that are supported to a greater or lesser degree upon or against the person, and an object of my invention, among others, is to provide such means for attaching the sight as shall securely maintain it in correct position and that shall also simplify the construction.

One form of device embodying my invention and in the construction and use of which the objects herein set out, as Well as others,.may be attained, is illustrated in the accompanying drawings, in which Figure 1 is a view in side elevation of a gun embodying my invention.

Fig. 2 is a detail View, scale enlarged, in central lengthwise section through the barrel portion of a gun illustrating my improvement, part of the structure being removed.

Fig. 3 is a detail view in cross section through the gun on plane denoted by dotted line 3-3 of Fig. 2.

Fig. 4 is a detail view in cross section through the gun on plane denoted by dotted line 4-4 of Fig. 2.

In the accompanying drawings the numeral 6 denotes the stock of a gun that may be of any approved construction and that, in the type herein shown, extends to a point near the front end of the barrel, and 7 denotes the hand guard, which parts are constructed in the usual manner of wood and are attached together to inclose the barrel and frame as by means of straps 8-9.

A sleeve 10 is placed upon the rear end or breech portion of the barrel, closely fitting the same, this sleeve preferably extending forward beyond the enlarged breech part of the barrel, thus providing a recess between its reduced part 11 and the end of said sleeve, within which recess a lip 12 on the rear end of the hand guard 7 extends, and that serves to partially secure said hand guard in place.

The base 13 of the rear sight is mounted upon the upper side of the sleeve 10 and is secured thereto in any suitable manner, in the construction shown herein spot welding, brazing, soldering or similar means being employed for effecting this result. A holding pin 14 extends through a hole in the barrel and sleeve. A positioning pin 16 is located in a positioning recess 15 in the edge of the receiver 17 of the gun, this positioning pin projecting beyond the edge of the receiver and entering a recess 18 extending inwardly from the back edge of the base and sleeve, either or both, and as shown in Fig. 2 of the drawings. A leaf 19 of any ordinary form and construction is attached to the base 13 in any suitable manner.

The positioning pin 16 is located on a plane passing vertically through the receiver and barrel at the axis of the latter, and the recess 18 is located on a plane passing vertically through the center of the sight base, both of said planes passing respectively through the center of the pin and recess. This insures that the sight will be accurately positioned, and the holding pin 14 is inserted only after the sight has been positioned by means of the positioning recess above described.

The front sight is constructed in a manner similar to the rear sight and, as above described, this front sight includes a sleeve 20 surrounding the barrel near its outer end and resting against a shoulder 21 thereon. A positioning screw 22 extends through the thickened upper portion or comb 23 of the sleeve and its pointed or conical shaped end fits a positioning recess 24 in the barrel. The comb 23 of this sleeve is provided with a dove-tailed cut 25 extending across the sleeve, and the hole for the positioning screw 22 is made in the bottom of this cut. A base 26 is shaped to fit the dove-tailed out, this fit preferably being a driving fit, and when the base is in place the end of the positioning screw 22 will be covered. A front sight 27 is secured to the base 26 in any suitable manner.

The front sight is placed in a definite position with respect to the rear sight, the same agencies being made use of in determining the location of the positioning pin and recess of the rear si ht as in locating the front sight, the inetho of securing these results "forming thev subject matter of another application filed separately from the present case b me. 7

a construetion 'of sight "that "satisfactorily embodies my ideas this oonstri ctionarnay be departed from to a greater or lesser degree and yetflbe within the spirit and intent of mounted onthe barrel and doweled t0 the frame, the axis of the dowel being located in plane passing 'venticaljly through "th longitudinal" axis of thebarrel 'to position fl fl sight basel a r I a V GRANT HAMMOND. Witnesses:

AR H R B. JENKINS,

E. F. EATON,

floliies of thgls patent;may be obtained .foi'lfiv e cents each, by-addressing the fiommi s sion er :Iatents.

' Washington, D. G. 

